salmson SIE BV Serie Instalacion Y Puesta En Servicio página 58

English
50
• By loosening the lantern fastening screws (Figs. 12, 13, 14, Item 4),
dismantle the lantern unit with coupling, shaft, mechanical seal and
impeller from the pump housing.
• Loosen the impeller fastening nut (Figs. 12, 13, 14; Item 1.11),
remove the washer underneath (Figs. 12, 13, 14; Item 1.12) and pull
the impeller (Figs. 12, 13, 14; Item 1.13) of the pump shaft.
CAUTION! Risk of damaging shaft, coupling and impeller!
• If dismantling is difficult or if the impeller jams, do not hit the
impeller or shaft at the side (e.g. with a hammer), but instead, use
a suitable extraction tool.
• Pull the mechanical seal (Figs. 12, 13, 14; Item 1.21) off the shaft.
• Pull the coupling (Figs. 12, 13, 14; Item 1.41) with the pump shaft out
of the lantern.
• Thoroughly clean the sliding/mating surfaces of the shaft. If the shaft
is damaged, it must be replaced.
• Remove the counter ring of the mechanical seal with the sealing collar
from the lantern flange, as well as the O-ring (Figs. 12, 13, 14; Item
1.14) and clean the seal seats.
• Press a new mechanical seal counter ring with sealing collar into the
seal seat of the lantern flange. A commercially available dishwashing
liquid can be used as a lubricant.
• Install a new O-ring in the groove of the O-ring seat of the lantern.
• Check the coupling sliding surfaces. If necessary, clean and slightly oil
them.
• Pre-install coupling shells on the pump shaft with spacer discs
inserted in between and insert the pre-mounted coupling/shaft unit
carefully into the lantern.
• Pull a new mechanical seal onto the shaft. A commercially available
dishwashing liquid can be used as a lubricant.
• Install the impeller with washer and nut, countering at the impeller's
outer diameter while doing so. Avoid damage to the mechanical seal
due to jamming.
NOTE:
For the thread type, observe the specified screw tightening torque
(see Page 51).
• Insert the pre-installed lantern unit carefully into the pump housing
and screw together. As you do so, hold onto the rotating parts of the
coupling to avoid damage to the mechanical seal. Observe the speci-
fied screw tightening torque.
• Slightly loosen the coupling screws. Slightly open the pre-installed
coupling.
• Install the motor using suitable hoisting gear and tighten the connec-
tion between lantern and motor.
NOTE:
For the thread type, observe the specified screw tightening torque
(see Page 51).
• Push the forked spacer (Fig. 13, Item 10) between the lantern and
coupling. The forked spacer must sit there without any play.
Pompes Salmson 03/2011